Walker’s XCEL 500BT Digital Electronic Muff. GWP-SF-XSEM-BT-BLZ – open box. Walkers Safety Razor Slim Electronic Muffs- HiViz Green. GWP-SF-RSEM-HVG – open box. Walkers Safety Razor Slim Electronic Ear Muffs – Blaze Orange. GWP-SF-RSEM-BLZ – open box. Walker’s Single Mic Electronic Earmuffs.